At least 12 Jaish-e-Mohammed terrorists have entered Jammu and Kashmir and could be planning large-scale attacks, a security official said, adding that the forces are on high alert in the state and the national capital Delhi. The official said that the terrorists have split into groups and, according to the intelligence inputs, could be planning large-scale terror strikes on Saturday - the 17th day of Ramzan and the anniversary of Battle of Badr, the first battle of Islam which took place in March 624 AD.